Here is a list of 50 things you can do to not feel guilty about global warming. I think this stuff is pretty important, because seriously, we're going to destroy the Earth. It might be sooner, it might be later, but pumping pollution into the air can't be a good thing, so we should probably stop that.
Most of these are pretty obvious, but it's good to have them all in one place. Some should be obvious but aren't - like not putting your fridge beside your stove. I've never thought of that before, but...duh.
There is one thing they forgot, though: